Who is most likely to be optimistic about cognitive competencies, ability to maintain memory, and other aspects of cognitive abilities regardless of actual age?

A) David, a man with a partner and two children who sees himself exactly at the age he is
B) Sharon, a 50-year-old woman who behaves like she is half her age
C) Andrea, a 50-year-old woman who has mobility problems and feels fragile
D) Mike, a man who is 45 years old but refuses to settle down and acts like a college student

Research shows that individuals who have a positive attitude toward aging and believe in their ability to maintain cognitive competencies are more likely to exhibit better cognitive functioning as they age. Sharon behaves like she is half her age, which suggests a positive attitude toward aging and a belief in her cognitive abilities. Therefore, she is the most likely to be optimistic about cognitive competencies regardless of her actual age. The other options provide no indication of an optimistic attitude toward aging or cognitive abilities.